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Chemistry

04/12/23

calculate the ksp value

(a) The molar solubility of PbBr2 at 25 oC is 1.0x10-2 mol/L. Calculate Ksp. (b) If 0.0490 g of AgIO3 dissolves per liter of solution, calculate the solubility product constant. (c) Using the... more

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Chemistry Organic Chemistry

04/12/23

Systematic Name of Coordination Compound

Give the systematic name of this coordination compound. Omit -N or -κN type designations. (NH4)3[Co(NO2)6]I am posting this at 9:50 PM. This is due by 9:00 AM tomorrow exactly. So I'd need it... more

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Chemistry

04/12/23

You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and an excess of sodium benzoate (C6H5COONa). (a) What is the pH of the benzoic... more

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Chemistry

04/12/23

Step by step chemistry problem due tonight

You are trying to determine the concentration of a stock solution of hydrochloric acid. You have 450.80 mL of 0.86 M dilute solution that was prepared with 25.50 of stock solution

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Chemistry

04/11/23

The gas is in a sealed can is at a pressure of 3.00 atm at 25 degrees Celsius. What would the gas pressure in the can be at 52.0 degrees Celsius.

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Chemistry

04/11/23

Stuck on chemistry problem due today

You are trying to determine the concentration of a stock solution of hydrochloric acid. You have 450.80 mL of 0.86 M dilute solution that was prepared with 25.50 of stock solution

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Chemistry

04/11/23

Stuck on homework problem for chemistry it’s due tonight

You are trying to determine the concentration of a stock solution of hydrochloric acid. You have 450.80 mL of 0.86 M dilute solution that was prepared with 25.50 of stock solution.

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Chemistry

04/11/23

How many grams are in 2.85×10 to the 23rd formula units of aluminum fluoride.

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Chemistry

04/11/23

empirical formula

A 15.85 g sample of Mo2O3(s) is converted completely to another molybdenum oxide by adding oxygen. The new oxide has a mass of 16.91 g . Add subscripts to correctly identify the empirical formula... more

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Chemistry

04/11/23

Complete and balance the following half-reaction in basic solution. Be sure to include the proper phases for all species within the reaction. Cr₂O₇²⁻(aq) → Cr³⁺(aq)

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Chemistry

04/11/23

Complete and balance the following redox reaction in basic solution. Be sure to include the proper phases for all species within the reaction. IO₃⁻(aq) + S²⁻(aq) → IO⁻(aq) + SO₂(g)

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Chemistry

04/11/23

Calculate the pH of a 0.025 M CH3COO- solution? (Ka for CH3COOH = 1.8x10-5)

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Chemistry

04/11/23

Calculate the molar concentration of OH- ions in a 0.724 M solution of hypobromite ion (BrO-: Kp = 4.0x10-6). What is the pH of this solution?

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Chemistry

04/11/23

Find pH of solution

The active ingredient in aspirin is acetylsalicylic acid (HC9H7O4), a monoprotic acid with Ka = 3.3x10-4 at 25oC. What is the pH of a solution obtained by dissolving two extra-strength aspirin... more

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Chemistry

04/11/23

If a solution of HF (Ka = 6.8x10-4) has a pH of 3.65, calculate the concentration of hydrofluoric acid.

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Chemistry Math Biology Calculus

04/11/23

Static Equilibrium

Please help to answer the following question - A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 300 N and is 4.50 m long. What is the tension... more

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Chemistry

04/10/23

Calculate the entropy change when 36.0g of water (bp = 100ºC; MM = 18.0g/mol) boils at 93ºC. The enthalpy of vaporization for water is 40660 J/mol.

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Chemistry

04/10/23

Determine the equilibrium constant for a reaction at 230.0 K if ∆G° =-12.20 kJ/mol. (R = 8.314 J/mol ･ K)

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Chemistry

04/10/23

What is the solubility of Ca(OH)₂ in 0.810 M Ba(OH)₂? Ksp for Ca(OH)₂ is 6.50 × 10⁻⁶. Ba(OH)₂ is a strong base.

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Chemistry

04/10/23

A solution containing 1.90 g of a diprotic acid H₂C₃H₂O₄ (malonic acid) was titrated with 45.5 mL of NaOH to reach the second equivalence point. What is the concentration of the NaOH solution?

(MW_malonic acid = 104.06 g/mol)

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Chemistry

04/10/23

How many moles of HCl were neutralized by the antacid tablet?

Aluminum hydroxide is a base that is the active ingredient in some over-the-counter antacids. Suppose you have 29.0mL of 0.180M HCl solution in a flask and you add an antacid tablet to the HCl.... more

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Chemistry

04/09/23

I need help please

2Al2 (CO3 )3 + 4H3 PO4 ---> AlPO4 + CO2 + H2OInsert the correct number of atoms from each element from the reactant side of the equationAl =C =O =H =P =

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Chemistry

04/09/23

Determine the [H3O+] and pH of a 0.200 M solution of formic acid.

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Chemistry

04/09/23

Find pH of acids

]Calculate the pH of each of the following strong acid solutions: a) 0.0167 M HNO3, b) 0.225 g of HClO3 in 2.00 L of solution, c) 15.00 mL of 1.00 M HCl diluted to 0.500 L, d) a mixture formed by... more

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Chemistry

04/09/23

At the freezing point of water (0oC), Kw = 1.2x10-15, Calculate [H+] and [OH-] for a neutral solution at this temperature.

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calculate the ksp value

Systematic Name of Coordination Compound

Buffer questions

Step by step chemistry problem due tonight

The gas is in a sealed can is at a pressure of 3.00 atm at 25 degrees Celsius. What would the gas pressure in the can be at 52.0 degrees Celsius.

Stuck on chemistry problem due today

Stuck on homework problem for chemistry it’s due tonight

How many grams are in 2.85×10 to the 23rd formula units of aluminum fluoride.

empirical formula

Complete and balance the following half-reaction in basic solution. Be sure to include the proper phases for all species within the reaction. Cr₂O₇²⁻(aq) → Cr³⁺(aq)

Complete and balance the following redox reaction in basic solution. Be sure to include the proper phases for all species within the reaction. IO₃⁻(aq) + S²⁻(aq) → IO⁻(aq) + SO₂(g)

Calculate the pH of a 0.025 M CH3COO- solution? (Ka for CH3COOH = 1.8x10-5)

Calculate the molar concentration of OH- ions in a 0.724 M solution of hypobromite ion (BrO-: Kp = 4.0x10-6). What is the pH of this solution?

Find pH of solution

If a solution of HF (Ka = 6.8x10-4) has a pH of 3.65, calculate the concentration of hydrofluoric acid.

Static Equilibrium

Calculate the entropy change when 36.0g of water (bp = 100ºC; MM = 18.0g/mol) boils at 93ºC. The enthalpy of vaporization for water is 40660 J/mol.

Determine the equilibrium constant for a reaction at 230.0 K if ∆G° =-12.20 kJ/mol. (R = 8.314 J/mol ･ K)

What is the solubility of Ca(OH)₂ in 0.810 M Ba(OH)₂? Ksp for Ca(OH)₂ is 6.50 × 10⁻⁶. Ba(OH)₂ is a strong base.

A solution containing 1.90 g of a diprotic acid H₂C₃H₂O₄ (malonic acid) was titrated with 45.5 mL of NaOH to reach the second equivalence point. What is the concentration of the NaOH solution?

How many moles of HCl were neutralized by the antacid tablet?

I need help please

Determine the [H3O+] and pH of a 0.200 M solution of formic acid.

Find pH of acids

At the freezing point of water (0oC), Kw = 1.2x10-15, Calculate [H+] and [OH-] for a neutral solution at this temperature.

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